Addition is the process of adding things together to make a total. It can also mean something extra that is included or added to what was already there.
From Latin 'additio', meaning 'an adding to', from 'addere' (to add). It has been used in both mathematical and general senses for centuries.
In math, addition builds bigger numbers; in life, addition builds bigger experiences. Every 'new addition'—a family member, a room, a skill—is a real-world version of 3 + 1.
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